mocha-doc-translation
translate mocha document
http://blog.csdn.net/lhfcws/article/details/8783553
https://stackoverflow.com/questions/4395469/tdd-and-bdd-differences
http://tobyho.com/2012/09/12/better-tdd-workflow-via-exclusive-tests-in-jasmine-and-mocha/
https://code.tutsplus.com/tutorials/how-to-test-your-javascript-code-with-qunit--net-9077